/Engine/Source/Runtime/TypedElementFramework/Public/Elements/Framework/TypedElementQueryBuilder.h
Adds new empty columns to the listed rows of the provided type. The addition will not be immediately done but delayed until the end of the tick group.
virtual void AddColumns ( TConstArrayView< TypedElementRowHandle > Rows, TConstArrayView< const [UScriptStruct](API\Runtime\CoreUObject\UObject\UScriptStruct) * > ColumnTypes )